though this unit is typically utilized in its standard 1

Expanded Outlet Design: A 2-inch expanded outlet reduces backpressure during discharge

and FX industrial heaters

the TTW2000 typically requires the larger F825-0262 pre-filter

this 1/2 inch control valve body is specifically designed to fit Armstrong ACV-2 series internals and pneumatic or electric actuators

Tekmar Controls 257 Control 321894-709 though this unit is typicallyThe Tekmar Controls 257 Control is a purpose built 24Vac domestic hot water two stage boiler control designed for high demand applications such as hotels, laundromats, and multi family residential complexes. This sophisticated microprocessor control provides high accuracy domestic hot water temperature regulation by effectively staging up to two on off boilers or a single two stage boiler. Utilizing an NTC thermistor 10k ohm sensor, the 257 maintains